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The meso-2,6-dichlorophenyl boron-dipyrromethene(BODIPY) derivative 1 was synthesized and characterized by single-crystal X-ray diffraction analysis, 1 H NMR and Esi-HRMS. Compound 1 crystallizes in monoclinic, space group P21/n with a = 8.717(4), b = 20.938(9), c = 12.402(6) ?, β = 98.660(7)°, V = 2237.7(17) ?3, D3 c = 1.333 Mg/cm, F(000) = 936, μ = 0.319 –mm1, Z = 4, the final R = 0.0537 and wR = 0.1556 for 5064 observed reflections with I 2ζ(I). Its photophysical properties were investigated by fluorescence and UV-Vis spectrum. 1 shows high fluorescence quantum yield in different solvents and poor solvent effect. In addition, compound 1 has high values of initial decomposition temperature(298 ℃). Moreover, cell imaging experiments showed 1 is promising for further bioimaging applications. 相似文献
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The estrogenic activity of influents and effluents of five municipal sewage treatment works(STWs)in Nanjing was investigated.The water samples were enriched by solid phase extraction,then eluted with different polar solvents,and finally three fractionated extracts were obtained.Estrogen receptor recombinant yeast screen was used to evaluate the estrogenic activity of individual fractionated extracts and their mixture.The results show that the influents and effluents of the two STWs mainly receiving industri... 相似文献
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宋文婷 《中国无机分析化学》2014,4(1)
以胺甲基苯并咪唑和水杨醛为原料设计合成了一个苯并咪唑衍生物荧光探针,通过荧光分光光度法和紫外分光光度法探寻其对常见阴阳离子的选择性识别性能。研究结果表明,Cu2 对合成得到的苯并咪唑衍生物具有荧光猝灭-“关”的作用,而S2O72-对该荧光猝灭体系具有荧光恢复-“开”的作用。据此,提出了具有实现对Cu2 、S2O72-的荧光“关-开”型探针。 相似文献
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鉴于溃坝生命损失评估的复杂性,借鉴国内外生命损失评估的相关研究成果,研究溃坝时警报与撤离过程,建立了评估暴露人口数量的警报与撤离模型以及死亡率评估模型;基于我国历史溃坝调查资料,提出以溃坝洪水特征为依据的淹没范围分区思想,建立了淹没区划标准及相应死亡率函数,提出适用于我国的溃坝生命损失评估方法及估算公式。实例应用表明,该方法及估算公式能比较客观地评估我国的溃坝生命损失情况。 相似文献
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以胺甲基苯并咪唑和水杨醛为原料设计合成了一个苯并咪唑衍生物荧光探针,通过荧光分光光度法和紫外分光光度法探寻其对常见阴阳离子的选择性识别性能。研究结果表明,Cu2+对合成得到的苯并咪唑衍生物具有荧光猝灭——"关"的作用,而S2O72-对该荧光猝灭体系具有荧光恢复——"开"的作用。据此,提出了具有实现对Cu2+,S2O72-的荧光"关-开"型探针. 相似文献
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